Chevrolet Colorado 2004–2006 — technical service bulletin
Bulletin 07123 · NHTSA communication 10022722 · issued Sep 1, 2008
Technical service bulletin
communication type
Engine and Engine Cooling
component
2004–2006
model years
6
vehicle entries
Official summary
Chevrolet gmc service campaign: see document search button for owner letter. Special coverage adjustment - engine intake valve seat may wear, such that combustion leakage occurs. Equipped with either a 2.8l (rpo lk5) 4 cylinder or 3.5l (rpo l52) 5 cylinder engine. *nj csc letter was received. Updated 3/9/09. *pe
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.